Stone-suspension device



July 3, 1923. 1 ,460.388

J. E. MALKNN sToNE susPENsIoN DEVICE Filed April ze. 1922 2 sheets-sheet 1 A TTORN July 3, 1923.

J. E. MALKYIN STONE SQSPENSION DEVICE Filed Ail-i1 26., 1922 2 shetssheet '2 Patented July 3, 1923,

iastate;

" UNITED STATES PATENTy oFFIcI-L JOHN E. MALKIN, or New YORK, n. Y.

SClOIiTE-TCTSPENSION` DEVICE.

Application filed April 26, 1922.y Serial-No. 556,664.

To aZZlwwm t may concern:

Be it known that LJOHN E.` MALKIN, a`

`.citizen of Russia, residing at New York,

county of NewV York, and State` of New York, have invented certain new `and useful Improvements in Stone-Suspension Devices,` of which -the following is a specifica-tion. The invention relates toy improvements in lstone working machines, preferably `to a machine designed for finishing `or proilingthe top surfaces of monumental or building stones, and for other similar purposes.

. It is theprincipal object of the invention to provide amachine of this character ywhich 1the provision of a machine rof this-character which allows a simultaneous movement of tool and work holders into aconvenient position directly infront lof the operator,` and forfallowing lan operation vof the tools by electricity. i

The invention furthermore includesthe provision of `suitable pattern and .holders v.for-the cutting tools to suitthe patternand special-'purpose for which the pattern is to be utilized.

Other objects and advantages otmy .invention will become more fully evident as 'the description' thereof proceeds,r and will` then be more specicallypointed out in the appended claims. l i

Apreferred form of my invention isillustrated in the accompanying drawings, torming a material part `ot my "invention, in which:

l. 4Figure 1 is a front view of almachine `constructed 'according to my invention.

Figure 2 is a side view thereof,.partly in section.,l j Figure 3 is a ragmentarysideview of a tool holderfor'tools to workvon spherical and similar bodies. .j u

Figure 4 isa top plan view thereof. Figure 5 is aside and end view of a pat- `allowing a rotatonot the drum by the ternand tool holder for work on bodies having anirregular contour.

Figure 6 is a top` plan view of ahammer tool also showing a fragmentary 'part of the shaft.

Figure 'T Figure 3 is an end view thereoili] Figure 9 is a detail .view of a tool head. Figure 10 is a detail view of afwwork holder.

. Tco is a side view of the hammer tool, and

Figure 11-is a fragmentary detail vview of another form of work holder.

. The machine r comprises au ybed 10, the i upper spaced ends oi' which are seniicircularlyshaped and grooved toi form guides for the outer .circular flanges 11 and 12` of a drum 1.3,..which is open on .both sides,fand

with teeth 15. vlfn the space `between the j guide elements the outer wall ofthe drum 13 `rests on rollers 16 rotating in brackets 17 secured to the inner wall'oif the bed 10.

A shaft 18 is transversely mounted in the bed 1() and carriesatyits outer end an operating hand wheel 19, andfnear the front iace of the drum a gear y2O the teeth otwhich hasa depending front flange 14: provided are in mesh `with the teeth ot tlange14 operation of the hand wheel.

The object to be worked upon is` repre- 21 kept in place byflateral screws 22 and 23 passingthrough the drum onoppositesides thereof having blunt ends 24, and by. screws `25 and 26 passed through` thedrumjtrom abo-ve and below` and provided at their inner ends with sharp points 27 onheads 28 which are kept in position on the screws Iby means of lateral adjusting` screws 29, `so that they `may be exchanged for sharpening and for new points. Thezupper ends ot the screws are provided with fiat heads 30 for engagesented in the drawings by a spherical body ment b v a suitable t-ool, andintermediate their endsthesejscrews are passed through the drum `and the heads 31 and 32 at the upper `and lower endsot a suitable ytool `holder 33 which7 as shown in Figure 47 comprises two clamping members 34 and i 35 .f pivotally connectedfat their-rear ends as at 3.6 `and connected at .their front ends by bolts 37 ,carrying ynuts 38 at their outer endsyi The tool holder33 has a longitudinalslot 39, and consists of two' pairs yot'. superposed 35` ceiling vor beam v68.

parallel, curved members to both sides of the slot'39 .between which the lateral. guide pins ".40 `otla .guide sleeve 41.for a hammer tool 42 are guided. Within the sleeve .41 the shaft 43 of the hammer is held, provided lon its upper face with three juxtaposed racks 44, 45, 46 for engagement by Ypaw-ls .47 pivoted at their inner ends between ears I48 on sleeve 41. A strong iiat spring :49 is sei cured at one of its ends to the up-per face of :the "body 4lv as at v50, while.l its z free "endis pressing upon theaupper edge'ofthetpawls .so that `an` extremelyline `adjustment of the hammer tool iS POSsible inthe iwell aknown manner.

The lhammer cane be operated by v:means of electricity supplied by means of wires l in the ordinary w'ellknown;` manner.

` .In fFigure 5`=a :inodifiediorm *of `a'itool VZOyholder "is illustra-ted comprising a body or vpattern 58 provided with a slot 59;.having ..thexshapegof the'contourto which ais-tone is to be cut. The cuttingtool in thiszinstance fhaving square guidepins160,:and the tool -"?'.holder `is .provided `with heads '6l and 62,

asimilar tot head. 31.;` and :32 by lineans'of` which itLissecured-to theidrum' through the interf :Jmediary ofi screws similar'toscrews 25 and :'26, while-"an "adjustment 'of these screws is 1. 30possible 'by 'meansof the nuts 63. To the 1x40 70A between each pair of superposed 'curved member of .theftool holder. I

The screws '22' "and 23 are `extended through the drum andcarry at their outer ends adjusting "nuts or heads 71 4and 72,

G while the ends of; the screws canfreelymove between the spacedwalls olf the bed. The tool is'p-rovided with an outer hand lever or grip '73.

It will be clear that in operation,1the stone `body to be worked upon is secured in place within the drum bya suitable adjustment of 'screws 25 and 26 and22 and 23, theformer f by means ofi their. nuts 63.

"The hammer 42 is adjusted accordingly,

155 and if Vfor instance'the Iwork on vthe lower part of'thestone'is iinished, the drum isrojtated "by meansl of the hand wheel ,19 vto bring theuppe'r part otthefstone within confvenie'nt" reach ofthe Operator. The arrange- 160' ment of thetool'vholder isy such thatit allowsa free'movement ofrthe Vtool between the twov pairs of curved'segments, while the n weight 69 willqprevent a too rapidmovey"mentl v v j *The-tool holden is' 'shown-here" to illustrate a support for a hammer for rigidly working .onlthefsurface of a sphericalbody, while it ilcanrbe quicklyz.exchanged iby .ope'ning the clamps 34 and 35 after unlocking nuts 38, vand if a pattern is to'be used for guiding theworking"tool a. holder as for instance illustrated` vvin Figure 5 is placed on the drum, and in such a case the tool is provided with square pins.

Changes may be made in the general arrangement ofsimydevice, and inthe `con- 1 struction lof thefniinordetails .thereof with- 'out departing from l the scope and fspirit '.thereo. I

'f-'VVhaty I "claim Lasnewi--anfddesire to protect `by Va United #States patent iis- 1. SA :machine ofithe character described, Icomprising ai'rotatabl'e :drum .open .on its sides, .a "tool holder .attachedgtoisaid id'num, means 'for yrotz'iting said drum, f means ttor Yiholding a tool fin isaid holder, :means .tor

holding a 4work 'fpie'cel finfisaidiidrum .in posi- "tion in iront'ot: the toolionsaid ;holder,:. and i means for suspendinglthe :tool :'holder. Y

12.?A vmachine of? the -character described, i

comprising a rotatable Jdrum, open "on'its sides, a biepartite ibase, rollers secured on *said base `for guiding said drumfmea'ns"` for rotating said drum, a tool f holder',lmeans "for holdin'g'av work piecel inv said 'drum in ffro-nt osaid tool, andacableiand weight forsus- 4pending-the'toolilfield in said holderfor free oscillatorymotion. Y

3. n a machine' ofthe class described, a tool holder comprising twoipairsof parallel superposed spaced and curved bars, 'la Iwork piece holder, heads'connectingv the' free ends yof both pairso'fibarasaid `heads forming clamps for holding adjusting screws forming part of the `work piece* holder, means Jfor guiding the tool between eachpair'ofcurved bars, and means for allowing ania'djustment of thetool againstA the workfpiece. j

l"4511iY amachine of ythej'class described, a drum, a L tool holder= excliangeably attached Yto s'aid-k drum, rsaid "tool' holder constituting a pattern for the shaping of thelstoneholding and adjusting screws for said tol hold- Ier,=and clamps on said tool holder' for `clamping* said screws .between the cheeks of said f clamps,adjustable workpiece holding means for suspending the work pieceint saiddrum,

' and-'means forrotatingsaid drum anidfwork apiece into" convenient working position.

'5. wIn a -machineof'the classy described, a tool holder comprising two pairs of curved guides, a -ishaft, ;a"handle on said` "shaft, a pair oi? 'spaced` lugs oni'saidlshaft 'forgui'ding it'A betweenrv thep airs or curved guides; and a clamping head for the tool laterallyffdisposed' 'to sai'd holder. j x l In :testimonyfwheref' "have aixedimy signature. 

